Final answer:
The filibuster is a parliamentary tactic used only in the United States Senate to extend debate and delay or prevent the passage of legislation, which can only be ended with a supermajority of 60 votes.
Step-by-step explanation:
The filibuster is a tactic exclusively used by the United States Senate. A Senator or group of Senators may deliver extended speeches to hold the floor indefinitely, thereby preventing the passage of a bill. This strategy can only be stopped if at least 60 Senators vote in favor of a motion for cloture, which ends the debate. Over time, the filibuster has evolved from Senators speaking at length on the Senate floor to a modern version, which is essentially a threat to filibuster that requires a supermajority of 60 votes for most legislation to proceed. Originally a tool for extended debate, the use of filibustering has also been associated with obstruction, notably during the civil rights era.
The filibuster is a tactic used by the Senate, which is part of the Congress. It is a parliamentary procedure and strategy where debate over a proposed piece of legislation is extended and delayed, allowing one or more members to delay or entirely prevent a vote on the proposal. The filibuster became more common after the Civil War and was eventually regulated by the Senate's Rule 22 in 1917, which allowed the chamber to hold a cloture vote to end debate.